Hoping to bump into stars like Kim Kardashian, Sean "Diddy" Combs and Rihanna on New Year's Eve? UsMagazine.com reveals where the celebs will be ringing in 2011:NEW YORK CITYR Lounge in the Renaissance New York Times Square Hotel (9 P.M.)Bruno Mars does a set overlooking Times Square; DJ Rev Run will perform after.Gansevoort Park Avenue (9 P.M.)Lauryn Hill will perform during the New Year's Eve celebration at Gansevoort Park Avenue. Tickets are available at NewYearsEve.com.Madame Tussauds (12 A.M.)Nicole "Snooki" Polizzi hosts a fist-pumping party to ring in 2011. Tickets are available at NewYearsEve.com.Amnesia (8 P.M.)Jersey Shore's Jenni "JWoww" Farley hosts a wild bash at this NYC hotspot. Tickets are available at NewYearsEve.com.Espace (9 P.M.)Paul "DJ Pauly D" DelVecchio hosts a party at Espace. Tickets are available at NewYearsEve.com.Hudson Hotel (8 P.M.)The Honey Brothers (featuring Adrian Grenier, Ari Gold, Ethan Gold, Andrew Vladeck and Daniel Posner) perform and host at the swanky hotel. Tickets are available at NewYearsEve.com.

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MIAMIWall Nightclub at W Hotel in Miami (9 P.M.)Drake hosts a party which also features DJ sets by DJ Phresh & Sinatra of 4AM. Tickets are available at NewYearsEve.com.Gansevoort Hotel Miami (9 P.M.)Kourtney Kardashian hosts Ciroc's New Year's Eve party on the hotel's rooftop. Tickets are available at NewYearsEve.com.LIV Nightclub (9 P.M.)Jamie Fox will host a New Years Eve party at LIV Nightclub. Kaskade will do a late night DJ set. Tickets are available at NewYearsEve.com.Mansion Nightclub (9 P.M.)The venue will be covered with $50,000 worth of pink decor. Hosted by Nikki Minaj, the party with have an open bar, aerialists, dancers and a midnight light show. Tickets are available at NewYearsEve.com.Cameo Nightclub (9 P.M.)Lil Jon rings in the New Year at Cameo Nightclub. Tickets are available at NewYearsEve.com.Mondrian South Beach (9 P.M.)Celebrate the new year with host Chloe Sevigny. Andrew Wyatt of Miike Snow will perform. Celebrity DJs Paul Sevigny and The MisShapes will also do sets. Tickets are available at NewYearsEve.com.Prelude by Barton G (8:30 P.M.)Glee and 30 Rock star Cheyenne Jackson hosts the glam bash. Tickets are available at NewYearsEve.com.

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Cosmopolitan HotelIt's invitation only, but the performance will be broadcast on the hotel's Strip-facing screen. Jay-Z and Coldplay will ring in 2011 playing both separately and together during a show at Sin City's newest (and already sold-out) hotel.HAZE Nightclub at ARIA Resort & Casino (9 P.M.)Grammy Award-winning hip-hop artist Nelly will host a blowout New Year's Eve bash at HAZE. Partygoers can expect a special live performance by Nelly and an unparalleled sensory experience thanks to HAZE's cutting edge light and sound technology. Tickets are available at NewYearsEve.com.

PHOTOS: How celebs spend their nights inJET Nightclub at The Mirage (9 P.M.)For one night only, JET Nightclub at The Mirage brings in hip-hop superstar B.o.B for an exclusive performance counting down to 2011. Tickets are available at NewYearsEve.com.The Bank Nightclub at Bellagio (10 P.M.)Las Vegas' most exclusive nightclub will toast to 2011 with a performance by British hip-hop sensation Jay Sean. Tickets are available at NewYearsEve.com.PURE Nightclub (9 P.M.)Ring in 2011 with chart-topping artist Rihanna as she hosts the most enticing New Year's Eve bash at PURE Nightclub inside Caesar's Palace.LAX Nightclub (9 P.M.)Known for throwing the most extravagant parties in the world, Sean "Diddy" Combs will gear up to host the  hottest New Year's Eve celebration in Las Vegas at LAX Nightclub.TAO Nightclub (8 P.M.)Kim Kardashian will be ringing in the New Year at TAO Nightclub. Tickets are available at NewYearsEve.com.Vanity Nightclub in the Hard Rock Hotel (9 P.M.)Grammy award-winning artist Ludacris hosts New Year's Eve bash at Vanity at Hard Rock Hotel & Casino. Singer Jason DeRulo will also be there. Lavo Nightclub (9 P.M.)From the creators of TAO, celebrate New Year's Eve at Lavo Nightclub with the star of Peepshow, Holly Madison. Tickets are available at NewYearsEve.com.

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CHICAGOJet Nightclub at Hard Rock Hotel Chicago (9 P.M.)Pete Wentz will host a rockin' party sponsored by Ciroc. Tickets are available at NewYearsEve.com.The Hilton Chicago (9 P.M.)T-Pain will host Playboy's New Year's Eve Party at the Hilton Chicago. Tickets are available at NewYearsEve.com.

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